Natural Roof Ventilation Systems

Intake vents located at the lowest part of the roof under.

Natural roof ventilation systems.

A natural system works best in a building with no ceiling but having small openings at the eaves and ridge peak of the roof and having large sidewall openings figure 2. Natural ventilation brings a steady supply of fresh air in the building topping up the oxygen level whilst at the same time expelling stale air. Instead it relies entirely on passive physical phenomena such as wind pressure or the stack effect. Natural ventilation is the intentional passive flow of outdoor air into a building through planned openings such as louvers doors and windows.

Natural ventilation does not require mechanical systems to move outdoor air. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Therefore in a building that uses velux roof windows for natural ventilation the stack effect is greater than in a building with only facade windows.

Take for example ridge vents. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. See the benefits of attic ventilation a new roof is more than just shingles. Fan noise often associated with mechanical systems is virtually eliminated the simple but effective design of the system provides fresh air during the daytime as well as night time cooling.

Airocle are the masters of natural ventilation learn about our industry leading 360º airflow analysis optimise your ventilation systems for clean safe air and a comfortable environment. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. Example from mh 2020. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.

Natural ventilation in a gable roof building occurs primarily because of the wind blowing over the ridge and to a lesser degree because of the temperature. In the french model home maison air et lumière mal the indoor air quality was evaluated with special focus on the effects of the natural ventilation system during summer. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces.